NetBSD/lib/libcurses/setterm.c

355 lines
9.5 KiB
C

/* $NetBSD: setterm.c,v 1.26 2000/06/12 21:04:08 jdc Exp $ */
/*
* Copyright (c) 1981, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)setterm.c 8.8 (Berkeley) 10/25/94";
#else
__RCSID("$NetBSD: setterm.c,v 1.26 2000/06/12 21:04:08 jdc Exp $");
#endif
#endif /* not lint */
#include <sys/ioctl.h> /* TIOCGWINSZ on old systems. */
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include "curses.h"
#include "curses_private.h"
static int zap(struct tinfo *tinfo);
struct tinfo *_cursesi_genbuf;
static char *sflags[] = {
/* am ut bs cc da eo hc hl */
&AM, &UT, &BS, &CC, &DA, &EO, &HC, &HL,
/* in mi ms nc ns os ul xb */
&IN, &MI, &MS, &NC, &NS, &OS, &UL, &XB,
/* xn xt xs xx */
&XN, &XT, &XS, &XX
};
static int *svals[] = {
/* pa Co */
&PA, &cO, &nc
};
static char *_PC,
**sstrs[] = {
/* AC AE AL AS bc bl bt cd ce */
&AC, &AE, &AL, &AS, &BC, &BL, &BT, &CD, &CE,
/* cl cm cr cs dc DL dm do eA */
&CL, &CM, &CR, &CS, &DC, &DL, &DM, &DO, &Ea,
/* ed ei k0 k1 k2 k3 k4 k5 k6 */
&ED, &EI, &K0, &K1, &K2, &K3, &K4, &K5, &K6,
/* k7 k8 k9 ho ic im ip kd ke */
&K7, &K8, &K9, &HO, &IC, &IM, &IP, &KD, &KE,
/* kh kl kr ks ku ll ma mb md */
&KH, &KL, &KR, &KS, &KU, &LL, &MA, &MB, &MD,
/* me mh mk mm mo mp mr nd nl */
&ME, &MH, &MK, &MM, &MO, &MP, &MR, &ND, &NL,
/* oc op pc rc sc se SF so sp */
&OC, &OP, &_PC, &RC, &SC, &SE, &SF, &SO, &SP,
/* SR ta te ti uc ue up us vb */
&SR, &TA, &TE, &TI, &UC, &UE, &UP, &US, &VB,
/* vi vs ve AB AF al dl Ic Ip */
&VI, &VS, &VE, &ab, &af, &al, &dl, &iC, &iP,
/* Sb Sf sf sr AL DL UP */
&sB, &sF, &sf, &sr, &AL_PARM, &DL_PARM, &UP_PARM,
/* DO LE RI */
&DOWN_PARM, &LEFT_PARM, &RIGHT_PARM,
};
static char *aoftspace; /* Address of _tspace for relocation */
static char *tspace; /* Space for capability strings */
static size_t tspace_size; /* size of tspace */
char *ttytype;
attr_t __mask_OP, __mask_ME, __mask_UE, __mask_SE;
int
setterm(char *type)
{
static char __ttytype[128], cm_buff[1024], tc[1024], *tcptr;
int unknown;
size_t limit;
struct winsize win;
char *p;
#ifdef DEBUG
__CTRACE("setterm: (\"%s\")\nLINES = %d, COLS = %d\n",
type, LINES, COLS);
#endif
if (type[0] == '\0')
type = "xx";
unknown = 0;
if (t_getent(&_cursesi_genbuf, type) != 1) {
unknown++;
}
#ifdef DEBUG
__CTRACE("setterm: tty = %s\n", type);
#endif
/* Try TIOCGWINSZ, and, if it fails, the termcap entry. */
if (ioctl(STDERR_FILENO, TIOCGWINSZ, &win) != -1 &&
win.ws_row != 0 && win.ws_col != 0) {
LINES = win.ws_row;
COLS = win.ws_col;
} else {
if (unknown) {
LINES = -1;
COLS = -1;
} else {
LINES = t_getnum(_cursesi_genbuf, "li");
COLS = t_getnum(_cursesi_genbuf, "co");
}
}
/* POSIX 1003.2 requires that the environment override. */
if ((p = getenv("LINES")) != NULL)
LINES = (int) strtol(p, NULL, 10);
if ((p = getenv("COLUMNS")) != NULL)
COLS = (int) strtol(p, NULL, 10);
/*
* Want cols > 4, otherwise things will fail.
*/
if (COLS <= 4)
return (ERR);
#ifdef DEBUG
__CTRACE("setterm: LINES = %d, COLS = %d\n", LINES, COLS);
#endif
if (!unknown) {
if (zap(_cursesi_genbuf) == ERR) /* Get terminal description.*/
return ERR;
}
/* If we can't tab, we can't backtab, either. */
if (!GT)
BT = NULL;
/*
* Test for cursor motion capability.
*
*/
if (t_goto(NULL, CM, 0, 0, cm_buff, 1023) < 0) {
CA = 0;
CM = 0;
} else
CA = 1;
PC = _PC ? _PC[0] : 0;
aoftspace = tspace;
if (unknown) {
strcpy(ttytype, "dumb");
} else {
tcptr = tc;
limit = 1023;
if (t_getterm(_cursesi_genbuf, &tcptr, &limit) < 0)
return ERR;
ttytype = __longname(tc, __ttytype);
}
/* If no scrolling commands, no quick change. */
__noqch =
(CS == NULL || HO == NULL ||
(SF == NULL && sf == NULL) || (SR == NULL && sr == NULL)) &&
((AL == NULL && al == NULL) || (DL == NULL && dl == NULL));
/* Precalculate conflict info for color/attribute end commands. */
__mask_OP = __ATTRIBUTES & ~__COLOR;
if (OP != NULL) {
if (SE != NULL && !strcmp(OP, SE))
__mask_OP &= ~__STANDOUT;
if (UE != NULL && !strcmp(OP, UE))
__mask_OP &= ~__UNDERSCORE;
if (ME != NULL && !strcmp(OP, ME))
__mask_OP &= ~__TERMATTR;
}
__mask_ME = __ATTRIBUTES & ~__TERMATTR;
if (ME != NULL) {
if (SE != NULL && !strcmp(ME, SE))
__mask_ME &= ~__STANDOUT;
if (UE != NULL && !strcmp(ME, UE))
__mask_ME &= ~__UNDERSCORE;
if (OP != NULL && !strcmp(ME, OP))
__mask_ME &= ~__COLOR;
}
__mask_UE = __ATTRIBUTES & ~__UNDERSCORE;
if (UE != NULL) {
if (SE != NULL && !strcmp(UE, SE))
__mask_UE &= ~__STANDOUT;
if (ME != NULL && !strcmp(UE, ME))
__mask_UE &= ~__TERMATTR;
if (OP != NULL && !strcmp(UE, OP))
__mask_UE &= ~__COLOR;
}
__mask_SE = __ATTRIBUTES & ~__STANDOUT;
if (SE != NULL) {
if (UE != NULL && !strcmp(SE, UE))
__mask_SE &= ~__UNDERSCORE;
if (ME != NULL && !strcmp(SE, ME))
__mask_SE &= ~__TERMATTR;
if (OP != NULL && !strcmp(SE, OP))
__mask_SE &= ~__COLOR;
}
return (unknown ? ERR : OK);
}
/*
* zap --
* Gets all the terminal flags from the termcap database.
*/
static int
zap(struct tinfo *tinfo)
{
const char *nampstr, *namp;
char ***sp;
int **vp;
char **fp;
char tmp[3];
size_t i;
#ifdef DEBUG
char *cp;
#endif
tmp[2] = '\0';
namp = "amutbsccdaeohchlinmimsncnsosulxbxnxtxsxx";
fp = sflags;
do {
*tmp = *namp;
*(tmp + 1) = *(namp + 1);
*(*fp++) = t_getflag(tinfo, tmp);
#ifdef DEBUG
__CTRACE("%2.2s = %s\n", namp, *fp[-1] ? "TRUE" : "FALSE");
#endif
namp += 2;
} while (*namp);
namp = "paCoNC";
vp = svals;
do {
*tmp = *namp;
*(tmp + 1) = *(namp + 1);
*(*vp++) = t_getnum(tinfo, tmp);
#ifdef DEBUG
__CTRACE("%2.2s = %d\n", namp, *vp[-1]);
#endif
namp += 2;
} while (*namp);
/* calculate the size of tspace.... */
nampstr = "acaeALasbcblbtcdceclcmcrcsdcDLdmdoeAedeik0k1k2k3k4k5k6k7k8k9hoicimipkdkekhklkrkskullmambmdmemhmkmmmompmrndnlocoppcprscseSFsospSRtatetiucueupusvbvivsveABAFaldlIcIpSbSfsfsrALDLUPDOLERI";
namp = nampstr;
tspace_size = 0;
do {
*tmp = *namp;
*(tmp + 1) = *(namp + 1);
t_getstr(tinfo, tmp, NULL, &i);
tspace_size += i + 1;
namp += 2;
} while (*namp);
if ((tspace = (char *) malloc(tspace_size)) == NULL)
return ERR;
#ifdef DEBUG
__CTRACE("Allocated %d (0x%x) size buffer for tspace\n", tspace_size,
tspace_size);
#endif
aoftspace = tspace;
namp = nampstr;
sp = sstrs;
do {
*tmp = *namp;
*(tmp + 1) = *(namp + 1);
*(*sp++) = t_getstr(tinfo, tmp, &aoftspace, NULL);
#ifdef DEBUG
__CTRACE("%2.2s = %s", namp, *sp[-1] == NULL ? "NULL\n" : "\"");
if (*sp[-1] != NULL) {
for (cp = *sp[-1]; *cp; cp++)
__CTRACE("%s", unctrl(*cp));
__CTRACE("\"\n");
}
#endif
namp += 2;
} while (*namp);
if (XS)
SO = SE = NULL;
else {
if (t_getnum(tinfo, "sg") > 0)
SO = NULL;
if (t_getnum(tinfo, "ug") > 0)
US = NULL;
if (!SO && US) {
SO = US;
SE = UE;
}
}
return OK;
}
/*
* getcap --
* Return a capability from termcap.
*/
char *
getcap(char *name)
{
size_t ent_size, offset;
char *new_tspace;
/* verify cap exists and grab size of it at the same time */
t_getstr(_cursesi_genbuf, name, NULL, &ent_size);
/* grow tspace to hold the new cap */
if ((new_tspace = realloc(tspace, ent_size + tspace_size)) == NULL)
return NULL;
/* point aoftspace to the same place in the newly allocated buffer */
offset = aoftspace - tspace;
tspace = new_tspace + offset;
return (t_getstr(_cursesi_genbuf, name, &aoftspace, NULL));
}